324 lines
6.5 KiB
C++
324 lines
6.5 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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template<typename T>
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class C { C(int a0 = 0); };
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template<>
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C<char>::C(int a0);
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struct S { }; // expected-note 3 {{candidate constructor (the implicit copy constructor)}}
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template<typename T> void f1(T a, T b = 10) { } // expected-error{{no viable conversion}} \
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// expected-note{{passing argument to parameter 'b' here}}
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template<typename T> void f2(T a, T b = T()) { }
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template<typename T> void f3(T a, T b = T() + T()); // expected-error{{invalid operands to binary expression ('S' and 'S')}}
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void g() {
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f1(10);
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f1(S()); // expected-note{{in instantiation of default function argument expression for 'f1<S>' required here}}
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f2(10);
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f2(S());
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f3(10);
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f3(S()); // expected-note{{in instantiation of default function argument expression for 'f3<S>' required here}}
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}
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template<typename T> struct F {
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F(T t = 10); // expected-error{{no viable conversion}} \
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// expected-note{{passing argument to parameter 't' here}}
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void f(T t = 10); // expected-error{{no viable conversion}} \
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// expected-note{{passing argument to parameter 't' here}}
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};
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struct FD : F<int> { };
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void g2() {
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F<int> f;
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FD fd;
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}
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void g3(F<int> f, F<struct S> s) {
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f.f();
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s.f(); // expected-note{{in instantiation of default function argument expression for 'f<S>' required here}}
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F<int> f2;
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F<S> s2; // expected-note{{in instantiation of default function argument expression for 'F<S>' required here}}
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}
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template<typename T> struct G {
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G(T) {}
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};
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void s(G<int> flags = 10) { }
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// Test default arguments
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template<typename T>
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struct X0 {
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void f(T = T()); // expected-error{{no matching}}
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};
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template<typename U>
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void X0<U>::f(U) { }
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void test_x0(X0<int> xi) {
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xi.f();
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xi.f(17);
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}
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struct NotDefaultConstructible { // expected-note 2{{candidate}}
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NotDefaultConstructible(int); // expected-note 2{{candidate}}
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};
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void test_x0_not_default_constructible(X0<NotDefaultConstructible> xn) {
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xn.f(NotDefaultConstructible(17));
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xn.f(42);
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xn.f(); // expected-note{{in instantiation of default function argument}}
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}
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template<typename T>
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struct X1 {
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typedef T value_type;
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X1(const value_type& value = value_type());
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};
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void test_X1() {
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X1<int> x1;
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}
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template<typename T>
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struct X2 {
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void operator()(T = T()); // expected-error{{no matching}}
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};
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void test_x2(X2<int> x2i, X2<NotDefaultConstructible> x2n) {
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x2i();
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x2i(17);
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x2n(NotDefaultConstructible(17));
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x2n(); // expected-note{{in instantiation of default function argument}}
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}
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// PR5283
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namespace PR5283 {
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template<typename T> struct A {
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A(T = 1); // expected-error 3 {{cannot initialize a parameter of type 'int *' with an rvalue of type 'int'}} \
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// expected-note 3{{passing argument to parameter here}}
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};
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struct B : A<int*> {
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B();
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};
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B::B() { } // expected-note {{in instantiation of default function argument expression for 'A<int *>' required he}}
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struct C : virtual A<int*> {
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C();
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};
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C::C() { } // expected-note {{in instantiation of default function argument expression for 'A<int *>' required he}}
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struct D {
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D();
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A<int*> a;
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};
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D::D() { } // expected-note {{in instantiation of default function argument expression for 'A<int *>' required he}}
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}
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// PR5301
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namespace pr5301 {
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void f(int, int = 0);
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template <typename T>
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void g(T, T = 0);
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template <int I>
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void i(int a = I);
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template <typename T>
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void h(T t) {
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f(0);
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g(1);
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g(t);
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i<2>();
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}
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void test() {
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h(0);
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}
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}
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// PR5810
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namespace PR5810 {
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template<typename T>
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struct allocator {
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allocator() { int a[sizeof(T) ? -1 : -1]; } // expected-error2 {{array with a negative size}}
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};
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template<typename T>
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struct vector {
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vector(const allocator<T>& = allocator<T>()) {} // expected-note2 {{instantiation of}}
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};
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struct A { };
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struct B { };
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template<typename>
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void FilterVTs() {
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vector<A> Result;
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}
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void f() {
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vector<A> Result;
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}
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template<typename T>
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struct X {
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vector<B> bs;
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X() { }
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};
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void f2() {
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X<float> x; // expected-note{{member function}}
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}
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}
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template<typename T> void f4(T, int = 17);
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template<> void f4<int>(int, int);
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void f4_test(int i) {
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f4(i);
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}
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// Instantiate for initialization
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namespace InstForInit {
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template<typename T>
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struct Ptr {
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typedef T* type;
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Ptr(type);
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};
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template<typename T>
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struct Holder {
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Holder(int i, Ptr<T> ptr = 0);
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};
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void test_holder(int i) {
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Holder<int> h(i);
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}
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};
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namespace PR5810b {
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template<typename T>
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T broken() {
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T t;
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double**** not_it = t;
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}
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void f(int = broken<int>());
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void g() { f(17); }
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}
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namespace PR5810c {
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template<typename T>
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struct X {
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X() {
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T t;
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double *****p = t; // expected-error{{cannot initialize a variable of type 'double *****' with an lvalue of type 'int'}}
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}
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X(const X&) { }
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};
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struct Y : X<int> { // expected-note{{instantiation of}}
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};
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void f(Y y = Y());
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void g() { f(); }
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}
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namespace PR8127 {
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template< typename T > class PointerClass {
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public:
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PointerClass( T * object_p ) : p_( object_p ) {
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p_->acquire();
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}
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private:
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T * p_;
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};
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class ExternallyImplementedClass;
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class MyClass {
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void foo( PointerClass<ExternallyImplementedClass> = 0 );
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};
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}
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namespace rdar8427926 {
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template<typename T>
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struct Boom {
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~Boom() {
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T t;
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double *******ptr = t; // expected-error 2{{cannot initialize}}
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}
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};
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Boom<float> *bfp;
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struct X {
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void f(Boom<int> = Boom<int>()) { } // expected-note{{requested here}}
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void g(int x = (delete bfp, 0)); // expected-note{{requested here}}
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};
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void test(X *x) {
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x->f();
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x->g();
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}
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}
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namespace PR8401 {
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template<typename T>
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struct A {
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A() { T* x = 1; } // expected-error{{cannot initialize a variable of type 'int *' with an rvalue of type 'int'}}
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};
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template<typename T>
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struct B {
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B(const A<T>& a = A<T>()); // expected-note{{in instantiation of}}
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};
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void f(B<int> b = B<int>());
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void g() {
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f();
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}
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}
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namespace PR12581 {
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const int a = 0;
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template < typename > struct A;
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template < typename MatrixType, int =
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A < MatrixType >::Flags ? : A < MatrixType >::Flags & a > class B;
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void
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fn1 ()
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{
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}
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}
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namespace PR13758 {
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template <typename T> struct move_from {
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T invalid;
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};
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template <class K>
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struct unordered_map {
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explicit unordered_map(int n = 42);
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unordered_map(move_from<K> other);
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};
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template<typename T>
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void StripedHashTable() {
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new unordered_map<void>();
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new unordered_map<void>;
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}
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void tt() {
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StripedHashTable<int>();
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}
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}
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